Public Date:
1014561: CVE-2013-4396 xorg-x11-server: use-after-free flaw when handling ImageText requests

The MITRE CVE dictionary describes this issue as:

Use-after-free vulnerability in the doImageText function in dix/dixfonts.c in the xorg-server module before 1.14.4 in X.Org X11 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted ImageText request that triggers memory-allocation failure.

Find out more about CVE-2013-4396 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 7.4
Base Metrics AV:A/AC:M/Au:S/C:C/I:C/A:C
Access Vector Adjacent Network
Access Complexity Medium
Authentication Single
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux version 5 (xorg-x11-server) RHSA-2013:1426 2013-10-15
Red Hat Enterprise Linux version 6 (xorg-x11-server) RHSA-2013:1426 2013-10-15

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 xorg-x11-server Not affected


Red Hat would like to thank the X.Org security team for reporting this issue. Upstream acknowledges Pedro Ribeiro as the original reporter.